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A. J. BASSETT AND J. E. SHARP. COMBINED GAS'AND STEAM GENERATOR.

APPLICATION FILED JULY 13. I917.

lutcntcdfivpt. 2, 1919.

UNITED STATES PATENT oFFIoE.

ALVIN J. BASSETT AND JOHN E SI-IARP, E MILWAUKEE, WISCONSIN, ASSIGNORS '1'0 MILWAUKEE RELIANCE BOILER WORKS, OE MILWAUKEE, WISCONSIN.

COMBINED GAS AND STEAM GENERATOR.

Specification of Letters Patent.

Patented Sept. 2, 1919.

Application filed July 13, 1917. Serial No. 180,401.

To all whom e'tmay concern:

Be it' known that we, ALVIN J. BASSETT. and JOHN E. SHARP, both citizens of the' United .States, and residents of Milwaukee, in'the county of Milwaukee and State of Wisconsin, have invented certain new. and

useful Improvements in Combined Gas and .Steam Generators; and we do hereby deoxact description thereof.

Our invention relates to certain new and clare that the following is a full, clear, and

useful improvements in gas producers, of

that type exemplified in Letters Patent No. 1062721, granted to W. F. Luick and A..J. Bassett, May 27, 1913.

It is primarily the object of our inven tion to so improve the structure of the gas generating chamber so as to provide for the utilization of excess heat energy for producing steam or hot water as may be des red "It is further an object of our invention to provide means for initially heating the water prior-to its entrance to the jacket surrounding the gas generator without de tracting'from the efliciency of the device.

With the above and other objects in view which will appear as the -'descript1on proceeds, our invent on resides in the novel construction, combination and arrangement of accompanymg drawings, the numeral 1 rep'- parts substantially as hereinafter described and particularly defined by the appended claim, it being understood that such changes in the precise embodiment of the herein disclosed invention may be made as come within the scope of the claim.

In the accompanying drawings we have illustrated one complete example of the physical embodiment ofour invention constructed according to the best mode we have so far devised for the practical application of the rinciples thereof, in which: r The drawing illustrates a sectional elevation of a complete gas 1producing plant embodying the features 0 our invention with par-tsbroken away and parts in section to better show certain structural features.

Referring now more particularly to the resents a metallic caslng having secured therein'in spaced relation by means of suitable stay-bolts 2, a shell or casing 3 which forms the wall of the gas generating chamher 4 which is closed at its upper endby a cap or cover 5, and the lower end of shell 3 is flanged laterally as at 6 and. secured to jacket 1 ma water-tight joint to provide -a steam or water jacket 7 which 'is closed at its upper end above cap"5 by a cover 8 which has in its top portion and in communlcatlon with the steam chamber a steam dome 9. A circular and inwardly tapered fuel pot 1O whichis forined by two sections having their inner ends" flanged and engaging' the shelf 01' bracket 11 fixed to the inner that is fitted to corresponding apertures in the covers 5 and 8, the gas delivery flue being in turn connected to the head of a heating drum 17. A T-section 18 of the flue has one branch that communicates with the drum bottom and another branch 19 that is coupled to a'bonnet 20, the third/branch being connected with extension 15' which terminates in a catch-basin 21, sealed with y a column of water same as bonnet 20, and provided with an overflow 22 to permit exit therefromof sediment.

The bonnet 20 is mounted in an open ended trap 23 with which it communicates by means of end ports 24:, the lower end of the bonnet being sealed by a column of water. This water column is maintained at predetermined normal height under control of a waste or overflow pipe 24, water being supplied to the trap 23 from a drain pipe 25 that communicates with said tra and the bottom water chamber 26 of a cylinder 27, and has intermediate its ends a three-way valve 28 from which leads a drain 28.

The crown 29 of the bonnet is provided with a depending vent pipe 30, the mouth of the same terminates slightly above the normal height of the trap water seal, the

vent pipe 'in turn, being connected to a I stack 30 for carrying off the gases incidental to an initial firing of the gas generator. The bonnet 20 is also provided with a gas deliveryyflue 15" communicating-with an elbow 31 that conducts the supply of gas from the generator to the water chamber 26 of the scrubbing cylinder 27, the said elbow being arranged to discharge under a grating 32 that serves as a support for a be had to the scouring substance. 15.

wet scouring body of filter material 33, which material is preferably I stone. The upper portion of the cylinder 27 of the scouring apparatus is provided with a second gratlng 32 between which and the adjacent.

head of said cylinder is a second body of dry filter material 34 such as finely crushed stone, coal or the like, through which the .gas' product passes and is delivered to the taining the filter material" 33 in the proper Wet condition, a spray 36 is disposedin the cylinder above the filter material bed, the

a so

'water or liquid draining from thefilter bed into the chamber 26 as willbe obvious.

Passing through the steamdome 9 is a passage 37 connecting the fuel magazine 38,

disposed above said steam dome, with the gas generator chamber, the same being provided with a cap closure and bottom that is controlled by gravity closingvalve 39 as shown, whereby fuel charges are supplied to the pot below. The cap, 8 is provided with suitable insulatingmaterial 40 such as asbestos and the like for retaining the heatin the steam chamber, and the chamber 7 is interrupted by a suitable thimble 41 that constitutes a poke hole having an adjustable cover .41 to permit the insertion therethrough of a poker (not shown) inorder to settle the fuel bed or break clinkerswhich may-form in the fuel pot. In order to provide a forced draft for thegenerator, an inlet 42 is provided terminating beneath the central portion of the grate and having coupled with its outer end a T-joint 43 having one branch connected with an air inlet- 44 from any suitable blower (not shown) and its other end communicating with a steam jet 45. r

The heating drum 17 has mounted therein near each end thereof a disk or plate 46 having secured therein the ends of tubes or fines 47 which connect the ends. of said drum and permits the uninterrupted passage therethrough of the gas. The spacesurrounding the tubes intermediate the disks 46 forms an initial heater for the water prior to its entrance tochamber 7 of theand the-water is supplied thereto lhy means of inlet 48' which has therein acontrol valve 49 which is automatically operated by float controlled means 50, as shown, and leading from near the top and bottom of the water space of drum 17 are the pipes 51 permitting, the passage from said drum to the For reenerator mam chamber 7 of the water. Connected with I the steam dome and the chamber 7 is a high 1 and low water alarm column 52 provided with the usual warning Whistlesteam gage and sight gage, the outlet for the steam generated in chamber 7 leading from the top of the steam dome as indicated at 53.

In most inventions of this character, ap- I i proximately 20% of the heat generated in the gas vchamber .4 is lost, and our invention tends'to eliminate this loss by utilizing such energy to generate 'steam'which may be used eliminate all loss of energy thus obtaining an extremely high] degree of efliciency- It will also-be readily understood that the s'teamand air inlets are used to start the fire or to keep up the gas supply while in operation, this being simply for a forced draft. If running on a pressure type of generator either the steam blower or volume blower can be used to keep up the pressure of gas or it may be run suction type, suc- What is claimed is:

a fuel pot disposed'therebeneath, a steam top ofthe gas generatingchamber,a steam c tion to be kept up by engines, suctionfans,

pressure exhausters or other suction devices,

. A combined gas and steam generator comprislng a gas generator chamber having dome on the jacket, a pre-heating chamber a disposed below the water level of the steam generating jacket andwprovided with water and gas spaces, a pipe connecting the water spaces of the pre-heatingchamber with the lower portion of the steam generating jacket, an inlet pipe for the water spaces of the preheating chamber, avalve controlling flow of water through said inlet pipe, a flue extending from the gas generating chamber td-the gas spaces of the pre-heating chamber,

a delivery flue extending 'vfrom said gas spaces, a level control means for the water in the jacket communicating with the steam dome and with the jacket below its water level, and an operative connection between said level'control means and'the valve of the inlet pipe of-the, pie-heating chamber.

In testimony that we claimthe foregoing Wisconsin.

ALVIN J. BASSETT. JOHN E. snanr. 

